Knowledge Components (KCs)—include only data that are associated with any of the
selected knowledge components. Save the set of selected KCs for sharing with collaborators.

Students—include only data that are associated with any of the selected students.

Problems—include only data that are associated with any of the selected problems.

Each filtering choice you make combines with the other filters to control which data are
included in the current report.

Filtering by Knowledge Components

Select knowledge components to include in the current report by selecting them in the
"Knowledge Components" navigation box. If a knowledge component box is checked, all transactions
associated with that knowledge component will be included in the current report.

KC Sets

Save your current selected set of knowledge components by using the Manage
KC Sets dialog. Launch the Manage KC Sets by clicking the wrench icon ()at the top of the "Knowledge Components"
navigation box.

From the Manage KC Sets dialog, you can save the set of
selected KCs. (Selected KCs are indicated with checkmarks next to their name in the navigation
panel, and with dark borders around their thumbnails on the Learning Curve report.) By saving a set,
you'll be able to load the set again at anytime, and share it with collaborators.

You might create a set to:

Examine a subset of KCs across conditions

Remove KCs that aren't worth investigating or including in reports because they are too
easy or otherwise irrelevant.

Quickly toggle between sets of KCs

Isolate common KCs between study conditions

Examine only some KCs that appear in a single condition

KC Sets are always shared with others who can access the dataset. If a person doesn't own a
set, however, he or she can only load the set, not delete or rename it.

Filtering by Students and Problems

Select students to include in the current report by selecting them in the "Students"
navigation box. If a student box is checked, all transactions associated with that student will be
included in the current report.

Select problems to include in the current report by selecting them in the "Problems"
navigation box. If a problem box is checked, all transactions associated with that problem will be
included in the current report.

Sample Selector

Sample Selector is a tool for creating and editing
samples, or groups of data you compare across—they're
not "samples" in the statistical sense, but more like filters.

By default, a single sample exists: "All Data". With the Sample
Selector, you can create new samples to organize your data.

You can use samples to:

Compare across conditions

Narrow the scope of data analysis to a specific time range,
set of students, problem category, or unit of a curriculum (for example)

A sample is composed of one or more filters, specific
conditions that narrow down your sample.

Creating a sample

The general process for creating a sample is to:

Add a filter from the categories at the left to the composition
area at the right

Modify the filter to select the subset of data you're interested
in, saving it when done

View the sample preview table to see the effect of adding your filter,
making sure you don't have an empty set (ie, a filter or combination
of filters that exclude all transactions).

Name and describe the sample

Decide whether to share the sample with others who can view the
dataset

Save the sample

The effect of multiple filters

DataShop interprets each filter after the first as an additional
restriction on the data that is included in the sample. This is also known
as a logical "AND". You can see the results of multiple filters in the
sample preview as soon as all filters are "saved".